IDT54/74FCT244T/AT/CT
FAST CMOS OCTAL BUFFER/LINE DRIVER
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
FAST CMOS OCTAL
BUFFER/LINE
DRIVER
FEATURES:
•
•
•
•
•
•
•
•
•
IDT54/74FCT244T/AT/CT
DESCRIPTION:
Std., A, and C grades
Low input and output leakage ≤1µA (max.)
CMOS power levels
True TTL input and output compatibility:
– VOH = 3.3V (typ.)
– VOL = 0.3V (typ.)
High Drive outputs (-15mA IOH, 64mA IOL)
Meets or exceeds JEDEC standard 18 specifications
Military product compliant to MIL-STD-883, Class B and DESC
listed (dual marked)
Power off disable outputs permit "live insertion"
Available in the following packages:
– Industrial: SOIC, SSOP, QSOP, TSSOP
– Military: CERDIP, LCC
The IDT octal buffer/line driver is built using an advanced dual metal
CMOS technology. The FCT244T is designed to be employed as a memory
and address driver, clock driver, and bus-oriented transmitter/ receiver
which provides improved board density.
FUNCTIONAL BLOCK DIAGRAM
OEA
OEB
DA0
OA0
OB0
DB0
DA1
OA1
OB1
DB1
DA2
OA2
OB2
DB2
DA3
OA3
OB3
DB3
IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
DECEMBER 2016
1
DSC-5586/5
IDT54/74FCT244T/AT/CT
FAST CMOS OCTAL BUFFER/LINE DRIVER
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
4
17
DB0
OB1
5
16
OA1
DA2
6
15
OB2
7
14
DB1
OA2
DA3
8
13
DB2
OB3
GND
9
12
OA3
10
11
DB3
DA1
4
OB1
5
DA2
6
OB2
7
DA3
8
20 19
18
1
17
OA0
16
OA1
15
DB1
OA2
14
9 10 11 12 13
PIN DESCRIPTION
ABSOLUTE MAXIMUM RATINGS(1)
Description
Max
Unit
Pin Names
VTERM(2) Terminal Voltage with Respect to GND
–0.5 to +7
V
OEA, OEB
VTERM(3) Terminal Voltage with Respect to GND
Description
3-State Output Enable Inputs (Active LOW)
–0.5 to VCC+0.5
V
Dxx
Inputs
TSTG
Storage Temperature
–65 to +150
°C
Oxx
Outputs
IOUT
DC Output Current
–60 to +120
mA
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause
permanent damage to the device. This is a stress rating only and functional operation
of the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability. No terminal voltage may exceed
Vcc by +0.5V unless otherwise noted.
2. Inputs and Vcc terminals only.
3. Output and I/O terminals only.
FUNCTION TABLE(1)
OEA
L
L
H
CAPACITANCE (TA = +25°C, F = 1.0MHz)
Symbol
Parameter(1)
Conditions
Typ.
DB0
LCC
TOP VIEW
CERDIP/ SOIC/ SSOP/ QSOP/ TSSOP
TOP VIEW
Symbol
OEB
3 2
DB2
18
VCC
OEB
OA0
OA3
2
3
OEA
VCC
19
DB3
OB0
DA1
20
OB3
DA0
1
GND
INDEX
OEA
OB0
DA0
PIN CONFIGURATION
Max.
NOTE:
1. H = HIGH Voltage Level
X = Don’t Care
L = LOW Voltage Level
Z = High Impedance
Unit
CIN
Input Capacitance
VIN = 0V
6
10
pF
COUT
Output Capacitance
VOUT = 0V
8
12
pF
Inputs
OEB
L
L
H
NOTE:
1. This parameter is measured at characterization but not tested.
2
D
L
H
X
Outputs
L
H
Z
IDT54/74FCT244T/AT/CT
FAST CMOS OCTAL BUFFER/LINE DRIVER
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: TA = –40°C to +85°C, VCC = 5.0V ±5%; Military: TA = –55°C to +125°C, VCC = 5.0V ±10%
Symbol
Test Conditions(1)
Parameter
Min.
Typ.(2)
Max.
Unit
VIH
Input HIGH Level
Guaranteed Logic HIGH Level
2
—
—
V
VIL
Input LOW Level
Guaranteed Logic LOW Level
—
—
0.8
V
IIH
Input HIGH Current(4)
VCC = Max.
VI = 2.7V
—
—
±1
µA
IIL
Input LOW Current(4)
VCC = Max.
VI = 0.5V
—
—
±1
µA
IOZH
High Impedance Output Current
VCC = Max
VO = 2.7V
—
—
±1
µA
IOZL
(3-State output pins)(4)
VO = 0.5V
—
—
±1
II
VIK
VH
Input HIGH Current(4)
Clamp Diode Voltage
Input Hysteresis
VCC = Max., VI = VCC (Max.)
VCC = Min, IIN = -18mA
—
—
—
—
–0.7
200
±1
–1.2
—
µA
V
mV
ICC
Quiescent Power Supply Current
VCC = Max., VIN = GND or VCC
—
0.01
1
mA
Min.
2.4
Typ.(2)
3.3
Max.
—
Unit
2
3
—
—
0.3
0.55
V
–60
–120
–225
mA
—
OUTPUT DRIVE CHARACTERISTICS
Symbol
VOH
Parameter
Output HIGH Voltage
VOL
Output LOW Voltage
IOS
Short Circuit Current
Test Conditions(1)
VCC = Min
IOH = –6mA MIL
IOH = –8mA IND
VIN = VIH or VIL
IOH = –12mA MIL
IOH = –15mA IND
VCC = Min
IOL = 48mA MIL
VIN = VIH or VIL
IOL = 64mA IND
VCC = Max., VO = GND(3)
V
NOTES:
1. For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 5.0V, +25°C ambient.
3. Not more than one output should be tested at one time. Duration of the test should not exceed one second.
4. The test limit for this parameter is ±5µA at TA = –55°C.
3
IDT54/74FCT244T/AT/CT
FAST CMOS OCTAL BUFFER/LINE DRIVER
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
POWER SUPPLY CHARACTERISTICS
Test Conditions(1)
Min.
Typ.(2)
Max.
Unit
—
0.5
2
mA
VIN = VCC
VIN = GND
—
0.15
0.25
mA/
MHz
VCC = Max.
Outputs Open
fi = 10MHz
VIN = VCC
VIN = GND
—
1.5
3.5
mA
50% Duty Cycle
OEA = OEB = GND
One Bit Toggling
VIN = 3.4V
VIN = GND
—
1.8
4.5
VCC = Max.
Outputs Open
fi = 2.5MHz
VIN = VCC
VIN = GND
—
3
6(5)
50% Duty Cycle
OEA = OEB = GND
Eight Bits Toggling
VIN = 3.4V
VIN = GND
—
5
14(5)
Symbol
Parameter
ΔICC
Quiescent Power Supply Current
TTL Inputs HIGH
VCC = Max.
VIN = 3.4V(3)
ICCD
Dynamic Power Supply
Current(4)
VCC = Max.
Outputs Open
OEA = OEB = GND
One Input Toggling
50% Duty Cycle
Total Power Supply Current(6)
IC
NOTES:
1. For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 5.0V, +25°C ambient.
3. Per TTL driven input; (VIN = 3.4V). All other inputs at VCC or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
5. Values for these conditions are examples of ΔICC formula. These limits are guaranteed but not tested.
6. IC = IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC + ΔICC DHNT + ICCD (fCP/2+ fiNi)
ICC = Quiescent Current
ΔICC = Power Supply Current for a TTL High Input (VIN = 3.4V)
DH = Duty Cycle for TTL Inputs High
NT = Number of TTL Inputs at DH
ICCD = Dynamic Current caused by an Input Transition Pair (HLH or LHL)
fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)
fi = Output Frequency
Ni = Number of Outputs at fi
All currents are in milliamps and all frequencies are in megahertz.
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
Symbol
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Parameter
Propagation Delay
Dx to Ox
Output Enable Time
Condition(1)
CL = 50pF
RL = 500Ω
Output Disable Time
54FCT244T
Mil.
Min.(2) Max.
1.5
7
54/74FCT244AT
Ind.
Mil.
Min.(2) Max. Min.(2) Max.
1.5
4.8
1.5
5.1
54/74FCT244CT
Ind.
Mil.
Min.(2) Max.
Min.(2) Max.
1.5
4.1
1.5
4.6
Unit
ns
1.5
8.5
1.5
6.2
1.5
6.5
1.5
5.8
1.5
6.5
ns
1.5
7.5
1.5
5.6
1.5
5.9
1.5
5.2
1.5
5.7
ns
NOTES:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
4
IDT54/74FCT244T/AT/CT
FAST CMOS OCTAL BUFFER/LINE DRIVER
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
TEST CIRCUITS AND WAVEFORMS
V CC
SWITCH POSITION
7.0V
500W
V OUT
VIN
Pulse
Generator
D.U.T
.
50pF
RT
500W
Test
Switch
Open Drain
Disable Low
Enable Low
Closed
All Other Tests
Open
DEFINITIONS:
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
CL
Octal Link
Test Circuits for All Outputs
DATA
INPUT
tH
tSU
TIMING
INPUT
ASYNCHRONOUS CONTROL
PRESET
CLEAR
ETC.
SYNCHRONOUS CONTROL
PRESET
CLEAR
CLOCK ENABLE
ETC.
tREM
tSU
3V
1.5V
0V
3V
1.5V
0V
LOW-HIGH-LOW
PULSE
1.5V
tW
3V
1.5V
0V
HIGH-LOW-HIGH
PULSE
1.5V
3V
1.5V
0V
tH
Pulse Width
Octal Link
Octal Link
Set-Up, Hold, and Release Times
ENABLE
SAME PHASE
INPUT TRANSITION
tPLH
tPHL
OUTPUT
tPLH
OPPOSITE PHASE
INPUT TRANSITION
tPHL
3V
1.5V
0V
VOH
1.5V
VOL
DISABLE
3V
1.5V
0V
CONTROL
INPUT
tPZL
OUTPUT
NORMALLY
LOW
3V
1.5V
0V
SWITCH
CLOSED
tPLZ
3.5V
1.5V
tPZH
OUTPUT
NORMALLY
HIGH
SWITCH
OPEN
3.5V
0.3V
VOL
tPHZ
0.3V
1.5V
0V
Octal Link
VOH
0V
Octal Link
Propagation Delay
Enable and Disable Times
NOTES:
1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.
2. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.
5
IDT54/74FCT244T/AT/CT
FAST CMOS OCTAL BUFFER/LINE DRIVER
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
ORDERING INFORMATION
XXXX
XX
FCT
Device Type
Temp. Range
XX
Package
X
Process
X
X
Blank
8
Tube
Tape and Reel
G
Green
Blank
B
Industrial
MIL-STD-883, Class B
SO
PY
Q
PG
Industrial Options
Small Outline IC (PSG20)
Shrink Small Outline Package (PYG20)
Quarter-size Small Outline Package (PCG20)
Thin Shrink Small Outline Package (PGG20)
D
L
Military Options
CERDIP (CD20)
Leadless Chip Carrier (LC20)
244T
244AT
244CT
Fast CMOS Octal Buffer/Line Driver
54
74
−55°C to +125°C
−40°C to +85°C
Datasheet Document History
09/29/2009
12/12/2016
Pg. 6
Pg. 6.
Updated the ordering information by removing the "IDT" notation and non RoHS part.
Updated the ordering information by adding detailed package information and Tape & Reel.
6
IMPORTANT NOTICE AND DISCLAIMER
RENESAS ELECTRONICS CORPORATION AND ITS SUBSIDIARIES (“RENESAS”) PROVIDES TECHNICAL
SPECIFICATIONS AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING
REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND
OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE, OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS.
These resources are intended for developers skilled in the art designing with Renesas products. You are solely responsible
for (1) selecting the appropriate products for your application, (2) designing, validating, and testing your application, and (3)
ensuring your application meets applicable standards, and any other safety, security, or other requirements. These
resources are subject to change without notice. Renesas grants you permission to use these resources only for
development of an application that uses Renesas products. Other reproduction or use of these resources is strictly
prohibited. No license is granted to any other Renesas intellectual property or to any third party intellectual property.
Renesas disclaims responsibility for, and you will fully indemnify Renesas and its representatives against, any claims,
damages, costs, losses, or liabilities arising out of your use of these resources. Renesas' products are provided only subject
to Renesas' Terms and Conditions of Sale or other applicable terms agreed to in writing. No use of any Renesas resources
expands or otherwise alters any applicable warranties or warranty disclaimers for these products.
(Rev.1.0 Mar 2020)
Corporate Headquarters
Contact Information
TOYOSU FORESIA, 3-2-24 Toyosu,
Koto-ku, Tokyo 135-0061, Japan
www.renesas.com
For further information on a product, technology, the most
up-to-date version of a document, or your nearest sales
office, please visit:
www.renesas.com/contact/
Trademarks
Renesas and the Renesas logo are trademarks of Renesas
Electronics Corporation. All trademarks and registered
trademarks are the property of their respective owners.
© 2020 Renesas Electronics Corporation. All rights reserved.